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Cotter, John
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Cotter, John
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Cotter, John
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Now showing 1 - 10 of 53
- PublicationCommodity Futures Hedging, Risk Aversion and the Hedging HorizonThis paper examines the impact of investor preferences on the optimal futures hedging strategy and associated hedging performance. Explicit risk aversion levels are often overlooked in hedging analysis. Applying a mean-variance hedging objective, the optimal futures hedging ratio is determined for a range of investor preferences on risk aversion, hedging horizon and expected returns. Wavelet analysis is applied to illustrate how investor time horizon shapes hedging strategy. Empirical results reveal substantial variation of the optimal hedge ratio for distinct investor preferences and are supportive of the hedging policies of real firms. Hedging performance is then shown to be strongly dependent on underlying preferences. In particular, investors with high levels of risk aversion and a short horizon reduce the risk of the hedge portfolio but achieve inferior utility in comparison to those with low risk aversion.
1058 - PublicationAbsolute return volatilityIn recent years the finance industry from an academic and practitioner perspective has placed heavy emphasis on the analysis of volatility models. This is understandable given the importance that volatility plays for these agents and the fact that it is not directly observable representing somewhat of a holy grail. In particular, volatility modelling feeds directly into risk management practices.
377 - PublicationMultivariate modeling of daily REIT volatility(University College Dublin. School of Business. Centre for Financial Markets, 2005-04-25)
; This paper examines volatility in REITs using a multivariate GARCH based model. The Multivariate VAR-GARCH technique documents the return and volatility linkages between REIT sub-sectors and also examines the influence of other US equity series. The motivation is for investors to incorporate time-varyng volatility and correlations in their portfolio selection. The results illustrate the differences in results when higher frequency daily data is tested in comparison to the monthly data that has been commonly used in the existing literature. The linkages both within the REIT sector and between REITs and related sectors such as value stocks are weaker than commonly found in monthly studies. The broad market would appear to be more influential in the daily case.382 - PublicationMargin requirements with intraday dynamics(University College Dublin. School of Business. Centre for Financial Markets, 2004-06-14)
; Both in practice and in the academic literature, models for setting margin requirements in futures markets use daily closing price changes. However, financial markets have recently shown high intraday volatility, which could bring more risk than expected. Such a phenomenon is well documented in the literature on high-frequency data and has prompted some exchanges to set intraday margin requirements and ask intraday margin calls. This article proposes to set margin requirements by taking into account the intraday dynamics of market prices. Daily margin levels are obtained in two ways: first, by using daily price changes defined with different time-intervals (say from 3 pm to 3 pm on the following trading day instead of traditional closing times); second, by using 5-minute and 1-hour price changes and scaling the results to one day. An application to the FTSE 100 futures contract traded on LIFFE demonstrates the usefulness of this new approach.394 - PublicationCredit Default Swaps as Indicators of Bank Financial Distress(University College Dublin. Geary Institute, 2016-01-07)
; ; We examine the ability of CDS contracts written on individual banks to provide market discipline. Changes in CDS spreads are found to represent a robust signal of bank failure, thus providing indirect market discipline. Furthermore, changes in CDS spreads provide information about the condition of banks which supplements that available from equity markets and contained in accounting metrics. Consistent results are detailed for both senior and subordinated CDS spreads. Our results hold for various cohorts, for excess and idiosyncratic changes in CDS and are robust to the use of alternative measures of bank distress, including rating downgrades and accounting risk.564 - PublicationVolatility and Irish exports(University College Dublin. School of Business. Centre for Financial Markets, 2004-10-12)
; We analyse the impact of volatility per se on exports for a a small open economy concentrating on Irish trade with the UK and the US. An important element is that we take account of the time lag between the trade decision and the actual trade or payments taking place by using a flexible lag approach. Rather than adopt a single measure of risk we also adopt a spectrum of risk measures and detail varied size characteristics and statistical properties. We find that the ambiguous results found to date may well be due to not taking account of the timing effect which varies substantially depending on which volatility measure is used. However, the foreign exchange volatility effect is consistently positive, indicating the dominance of exporters expectations of possible profitable opportunities from future cash flows. The potential negative aspects of trade, the entry and exit costs, are accounted for by a negative influence of income volatility on trade.328 - PublicationHedging effectiveness under conditions of asymmetry(University College Dublin. School of Business. Centre for Financial Markets, 2007)
; We examine whether hedging effectiveness is affected by asymmetry in the return distribution by applying tail specific metrics to compare the hedging effectiveness of short and long hedgers using crude oil futures contracts. The metrics used include Lower Partial Moments (LPM), Value at Risk (VaR) and Conditional Value at Risk (CVAR). Comparisons are applied to a number of hedging strategies including OLS and both Symmetric and Asymmetric GARCH models. Our findings show that asymmetry reduces in-sample hedging performance and that there are significant differences in hedging performance between short and long hedgers. Thus, tail specific performance metrics should be applied in evaluating hedging effectiveness. We also find that the Ordinary Least Squares (OLS) model provides consistently good performance across different measures of hedging effectiveness and estimation methods irrespective of the characteristics of the underlying distribution.354 - PublicationCan housing risk be diversified? A cautionary tale from the housing boom and bust(University College Dublin. Geary Institute, 2014-09)
; ; This study evaluates the effectiveness of geographic diversification in reducing housing investment risk. To characterize diversification potential, we estimate spatial correlation and integration among 401 US metropolitan housing markets. The 2000s boom brought a marked uptrend in housing market integration associated with eased residential lending standards and rapid growth in private mortgage securitization. As boom turned to bust, macro factors, including employment and income fundamentals, contributed importantly to the trending up in housing return integration. Portfolio simulations reveal substantially lower diversification potential and higher risk in the wake of increased market integration.549 - PublicationThe non-linear trade-off between return and risk: a regime-switching multi-factor frameworkThis study develops a multi-factor framework where not only market risk is considered but also potential changes in the investment opportunity set. Although previous studies find no clear evidence about a positive and significant relation between return and risk, favourable evidence can be obtained if a non-linear relation is pursued. The positive and significant risk-return trade-off is essentially observed during low volatility periods. However, this relationship is not obtained during periods of high volatility. Also, different patterns for the risk premium dynamics in low and high volatility periods are obtained both in prices of risk and market risk dynamics.
360 - PublicationAnatomy of a Bail-InTo mitigate potential contagion from future banking crises, the European Commission recently proposed a framework which would provide for the bail-in of bank creditors in the event of failure. In this study, we examine this framework retrospectively in the context of failed European banks during the global financial crisis. Empirical findings suggest that equity and subordinated bond holders would have been the main losers from the e535 billion impairment losses realized by failed European banks. Losses attributed to senior debt holders would, on aggregate, have been proportionally small, while no losses would have been imposed on depositors. Cross-country analysis, incorporating stress-tests, reveals a divergence of outcomes with subordinated debt holders wiped out in a number of countries, while senior debt holders of Greek, Austrian and Irish banks would have required bail-in.
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